/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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* Copyright 2014 ForgeRock AS
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*/
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package org.opends.server.backends.persistit;
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import org.opends.server.backends.jeb.EntryID;
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import org.opends.server.backends.pluggable.KeyValueStore;
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import org.opends.server.backends.pluggable.NotImplementedException;
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import org.opends.server.backends.pluggable.SuffixContainer;
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import org.opends.server.types.DN;
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import org.opends.server.types.DirectoryException;
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import com.persistit.Exchange;
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import com.persistit.Key;
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import com.persistit.Transaction;
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import com.persistit.Value;
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import com.persistit.exception.PersistitException;
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import static org.opends.server.backends.jeb.JebFormat.*;
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/**
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* Persistit implementation of the DN2ID index.
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*/
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class PersistitDN2ID implements KeyValueStore<DN, EntryID, Transaction, Void>
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{
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private static final String INDEX_NAME = SuffixContainer.ID2ENTRY_INDEX_NAME;
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private final String fullyQualifiedIndexName;
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private final PersistitSuffixContainer suffixContainer;
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private final int prefixRDNComponents;
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/**
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* Creates a new dn2id index.
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*
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* @param suffixContainer
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* the suffix container holding this dn2id index
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*/
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PersistitDN2ID(PersistitSuffixContainer suffixContainer)
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{
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this.suffixContainer = suffixContainer;
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this.fullyQualifiedIndexName = suffixContainer.getFullyQualifiedIndexName(INDEX_NAME);
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this.prefixRDNComponents = suffixContainer.getBaseDN().size();
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}
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/** {@inheritDoc} */
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@Override
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public void open() throws DirectoryException
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{
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try
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{
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this.suffixContainer.createTree(INDEX_NAME);
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}
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catch (PersistitException e)
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{
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throw new NotImplementedException(e);
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean insert(Transaction txn, DN dn, EntryID entryID) throws DirectoryException
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{
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Exchange ex = null;
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try
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{
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ex = suffixContainer.getExchange(INDEX_NAME);
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appendAll(ex.getKey(), dnToDNKey(dn, prefixRDNComponents));
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ex.getValue().put(entryID.longValue());
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ex.store();
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return true;
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}
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catch (PersistitException e)
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{
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throw new NotImplementedException(e);
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}
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finally
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{
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suffixContainer.releaseExchange(ex);
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}
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}
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private void appendAll(Key key, byte[] bytes)
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{
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if (bytes.length == 0)
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{
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// TODO JNR which is best here?
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// key.append(null);
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key.append((byte) ',');
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}
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else
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{
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// FIXME JNR this way to append is really not efficient
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for (byte b : bytes)
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{
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key.append(b);
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}
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean put(Transaction txn, DN dn, EntryID entryID) throws DirectoryException
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{
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throw new NotImplementedException();
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}
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/** {@inheritDoc} */
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@Override
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public EntryID get(Transaction txn, DN dn, Void mode) throws DirectoryException
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{
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Exchange ex = null;
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try
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{
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ex = suffixContainer.getExchange(INDEX_NAME);
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appendAll(ex.getKey(), dnToDNKey(dn, prefixRDNComponents));
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ex.fetch();
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final Value value = ex.getValue();
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if (value.isDefined())
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{
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return new EntryID(value.getLong());
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}
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return null;
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}
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catch (PersistitException e)
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{
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throw new NotImplementedException(e);
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}
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finally
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{
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suffixContainer.releaseExchange(ex);
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean remove(Transaction txn, DN dn) throws DirectoryException
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{
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throw new NotImplementedException();
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}
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/** {@inheritDoc} */
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@Override
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public void close()
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{
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// nothing to do
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}
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}
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